Double deflecting spray nozzle



July 12, 1955 R. H. GODDARD 2,712,962

DOUBLE DEFLECTING SPRAY NOZZLE Filed Dec. 11, 1952 IN V EN TOR. ROBERTH. GODDARD, DEG D.

2,712,962 Fatented July 12, 1955 DQUBLE narancrnso SPRAY P.

Application Beeern'aer ll, 1952, Serial No. 325,252

1 Claim. {CL 299-121) This invention relates to nozzles adapted toprovide a liquid spray in an internal combustion chamber.

It is the general object of the invention to provide very simple andunitary means for delivering a liquid in two separate and intersectingportions. By the intersection of these separate portions, the liquidsupplied through the nozzle is effectively broken up and a resultantsheet of spray of very uniform consistency is attained.

The invention further relates to arrangements and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claim.

A preferred form of the invention is shown in the drawings, in whichFig. 1 is a sectional side elevation of the improved nozzle;

Fig. 2 is a sectional plan view, taken along the line 22 in Fig. 1; and

Fig. 3 is an enlarged sectional View of certain parts shown in Fig. 1.

Referring to Fig. 1, the liquid to be sprayed is delivered underpressure through a supply pipe 10 having a reduced end opening 12 at itslower end.

The nozzle N comprises an end disc 2% and an axial supporting stem 22.The stem 22 may be threaded into a collar 24, held in fixed positionwithin the pipe 10 by a plurality of narrow radial supporting arms 26.

The end disc or plate 24) of the nozzle N is provided with astream-lined upwardly concave annular surface 27 extending outward tothe peripheral surface 28 of the member 20, and with which peripheralsurface it intersects at an acute angle to define a relatively sharpedge 29.

The stem 22 has a plurality of outwardly projecting lugs 30, which arespaced substantially above the end plate 20. The upper surfaces of theselugs 30 are stream-lined and are angularly directed outward as shown inFigs. 1

and 3. Substantial flow passages 32 are provided between the lugs 30.

The operation of the improved double deflecting nozzle is as follows:

When a desired liquid, such as liquid oxygen, is delivered underpressure through the supply pipe 10, an annular stream of the liquidpasses downward through the opening 12, and portions of the liquid aredeflected outward by the lugs 30 and pass closely adjacent therelatively sharp edge 29 of the plate 28, as indicated at a (Fig. 3).The remaining and somewhat larger portions of liquid pass directlydownward through the unobstructed openings 32 and thereafter engage theconcave annular surface 27 of the disc or plate 29. This liquid is thendirected as indicated at b (Fig. 3) and approximately at right angles tothe direction of flow of the first liquid portions.

The two sets of streams of liquid are both effectively broken up by theintersecting impact of the streams on each other, and a single combinedspray sheet of uniform consistency and with a thickened edge portion isdelivered from the spray nozzle at the approximate angle indicated at c.

It will be particularly noted that this desirable result is attained bythe use of the single nozzle N, which is of extremely simple and unitaryconstruction.

Having thus described the invention and the advantages thereof, it willbe understood that the invention is not to be limited to the detailsherein disclosed, otherwise than as set forth in the claim, but what isclaimed is:

A double deflecting spray nozzle for a combustion liquid which comprisesan axial supporting stem about which an annular stream of liquid flows,said stem having angularly-spaced deflecting lugs thereon which arecircumferentially separated by unobstructed and relatively deep recesseswhich provide open passages extending inward substantially to said stem,and an end disc mounted on said stem below said lugs and having anannular concave deflecting surface, said lugs and said concave surfacebeing engaged by different circumferential portions of the annularstream of combustion liquid, and said different portions being therebydirected along intersecting paths.

References Cited in the file of this patent UNITED STATES PATENTS316,581 Stratton Apr. 28, 1885 772,779 Burgemeister Oct. 18, 19041,674,480 Nelson June 19, 1928

